ICD-10 I24
Non-Billable HeaderOther acute ischemic heart diseases
About ICD-10-CM I24
ICD-10-CM code I24 represents Other acute ischemic heart diseases. This is a non-billable header code in the Circulatory System chapter (block I24). The 2026 edition of ICD-10-CM I24 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with I24. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- angina pectoris (I20.-)
- transient myocardial ischemia in newborn (P29.4)
Type 2 Excludes
Not included here, the excluded code is not part of I24, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- non-ischemic myocardial injury (I5A)
Medicare LCD Coverage for I24
Local Coverage Determinations (LCDs) from CMS MACs that list I24 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I24.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but I24 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with I24
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 93000 Electrocardiogram for chest pain evaluation Internal Medicine
- 93015 Stress test for chest pain evaluation Cardiovascular Disease
- 93563 Echocardiogram for chest pain evaluation Cardiovascular Disease
- 93565 Transesophageal echocardiogram for chest pain evaluation Cardiovascular Disease
- 93501 Echocardiogram for chest pain evaluation Cardiovascular Disease
- 93598 Intravascular ultrasound for chest pain evaluation Cardiovascular Disease
- 93618 Implantable cardioverter-defibrillator for ventricular tachycardia Cardiovascular Disease
- 93750 Pacemaker insertion for bradycardia Cardiovascular Disease
- 93799 Unlisted cardiovascular procedure Cardiovascular Disease
- 93567 Transesophageal echocardiogram for chest pain evaluation Cardiovascular Disease
Codes Adjacent To I24
Other codes in section I20-I25 (Ischemic heart diseases).
ICD-10 I24, Billing FAQ
Is ICD-10 code I24 billable? +
No, I24 is a non-billable header code. Use a more specific child code from block I24 when submitting claims.
What codes are Type 1 Excludes for I24? +
Type 1 Excludes (never code together with I24): angina pectoris (I20.-); transient myocardial ischemia in newborn (P29.4)
What codes are Type 2 Excludes for I24? +
Type 2 Excludes (may be coded together when both conditions exist): non-ischemic myocardial injury (I5A)
What CPT codes are commonly billed with I24? +
Procedures frequently paired with I24 include: 93000, 93015, 93563, 93565, 93501.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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